<?php
/**
 * 企业详情接口  GET /api/company/detail.php?id=1
 * 返回企业主表信息 + 关联数据（产品品类/需求/文档/财务）
 */
require_once __DIR__ . '/../common/db.php';
require_once __DIR__ . '/../common/response.php';
require_once __DIR__ . '/../common/auth.php';

checkPermission('company');

$id = (int)($_REQUEST['id'] ?? 0);
if ($id <= 0) {
    Response::error('参数错误', 400);
}

$pdo = DB::getInstance()->getPdo();

$stmt = $pdo->prepare("SELECT * FROM companies WHERE id = ?");
$stmt->execute([$id]);
$company = $stmt->fetch();
if (!$company) {
    Response::error('企业不存在');
}

$products = $pdo->prepare("SELECT id, category_name, category_description, is_core, is_active FROM company_products WHERE company_id = ? AND is_active = 1");
$products->execute([$id]);

$needs = $pdo->prepare("SELECT id, contact_person, need_category, target_product_category, application_scenario, description, is_valid, created_at FROM company_needs WHERE company_id = ? ORDER BY id DESC");
$needs->execute([$id]);

$docs = $pdo->prepare(
    "SELECT cd.id, cd.doc_name, cd.storage_path, cd.file_type, cd.publish_date, cd.is_active
     FROM company_documents cd
     INNER JOIN document_links dl ON dl.document_id = cd.id
     WHERE dl.owner_type = 'company' AND dl.owner_id = ? AND cd.is_active = 1"
);
$docs->execute([$id]);

$financials = $pdo->prepare("SELECT * FROM company_financials WHERE company_id = ? ORDER BY fiscal_year DESC");
$financials->execute([$id]);

$relations = $pdo->prepare(
    "SELECT cr.id, cr.relation_type, cr.is_direct, cr.ownership_percentage, cr.established_date, c.display_name AS child_name
     FROM company_relations cr
     LEFT JOIN companies c ON c.id = cr.child_company_id
     WHERE cr.parent_company_id = ?"
);
$relations->execute([$id]);

// 资质认证（瞪羚企业等，JOIN 字典表取名称）
$certs = $pdo->prepare(
    "SELECT cc.certification_type_id, ct.name AS certification_name, cc.certificate_number,
            cc.issue_date, cc.expiry_date
     FROM company_certifications cc
     INNER JOIN certification_types ct ON ct.id = cc.certification_type_id
     WHERE cc.company_id = ?
     ORDER BY ct.sort_order, ct.id"
);
$certs->execute([$id]);

$certTypes = $pdo->query("SELECT id, name FROM certification_types WHERE is_active = 1 ORDER BY sort_order, id")->fetchAll();

// 关联联系人（工作经历 + 联系方式）
$contacts = $pdo->prepare(
    "SELECT p.id, p.full_name,
            (SELECT GROUP_CONCAT(CONCAT_WS(' ', pwe2.position, pwe2.department) SEPARATOR ' / ')
             FROM person_work_experiences pwe2
             WHERE pwe2.company_id = ? AND pwe2.person_id = p.id AND pwe2.is_active = 1) AS position,
            (SELECT GROUP_CONCAT(CONCAT(sa.platform, ':', sa.account_id) SEPARATOR ' | ')
             FROM social_accounts sa WHERE sa.owner_type = 'person' AND sa.owner_id = p.id AND sa.is_active = 1) AS contacts
     FROM person_work_experiences pwe
     LEFT JOIN persons p ON p.id = pwe.person_id
     WHERE pwe.company_id = ? AND pwe.is_active = 1
     GROUP BY p.id, p.full_name"
);
$contacts->execute([$id, $id]);

Response::success([
    'company'    => $company,
    'products'   => $products->fetchAll(),
    'needs'      => $needs->fetchAll(),
    'documents'  => $docs->fetchAll(),
    'financials' => $financials->fetchAll(),
    'relations'  => $relations->fetchAll(),
    'contacts'   => $contacts->fetchAll(),
    'certifications'     => $certs->fetchAll(),
    'certification_types' => $certTypes,
]);